(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Children's Library | Biodiversity Heritage Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "IS 15200: Hydrogen Sulphide--Code of Safety"

**************** 



*■ fe^K 




Disclosure to Promote the Right To Information 

Whereas the Parliament of India has set out to provide a practical regime of right to 
information for citizens to secure access to information under the control of public authorities, 
in order to promote transparency and accountability in the working of every public authority, 
and whereas the attached publication of the Bureau of Indian Standards is of particular interest 
to the public, particularly disadvantaged communities and those engaged in the pursuit of 
education and knowledge, the attached public safety standard is made available to promote the 
timely dissemination of this information in an accurate manner to the public. 




Mazdoor Kisan Shakti Sangathan 
"The Right to Information, The Right to Live" 



IS 15200 (2002) : Hydrogen Sulphide — Code of Safety. ICS 
13.300 : 71.060.99 




Jawaharlal Nehru 
'Step Out From the Old to the New' 



■K^y / 1 juaaaws^fea rs^^TTF^ 



2*S< W I *>S*V2^NK^ 



^frcvvv^ 



Satyanarayan Gangaram Pitroda 
Invent a New India Using Knowledge 



?TR TJ^ ^TT teMHI | ^t ^Tift ^FTT ^f ^TT ^T^?TT \' 

Bhartrhari — Nitisatakam 
"Knowledge is such a treasure which cannot be stolen" 




.^^_ 



• 




IS 15200: 2002 

Indian Standard 
HYDROGEN SULPHIDE — CODE OF SAFETY 



ICS 13.300:71.060.99 



r; ■-* & i X 



a nef Pr m fj * * 



© BIS 2002 

BUREAU OF INDIAN STANDARDS 

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG 
NEW DELHI 110002 

September 2002 Price Group 3 



Industrial Safety and Chemical Hazards Sectional Committee, CUD 8 



FOREWORD 

This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Industrial 
Safety and Chemical Hazards Sectional Committee had been approved by the Chemical Division Council. 

Hydrogen sulphide is found in volcanic gases and in many spring waters. As a product of putrefaction of 
sulphur containing decaying organic material, it is present in sewer gas and also liberates from waste water of 
tanneries, glue factories and fertilizer plants, k is also liberated as a by-product of de-hairing and tanning 
process. The unpleasant smell of putrefied hides and rotten eggs is partly due to this gas. Exposure to hydrogen 
sulphide may occur in the production of viscose rayon, sulphur dyes, sulphur, oleum and coke from coal containing 
high sulphur content.The atmosphere usually contains a trace of this gas. It is an important raw material for 
producing sulphur and thio-organic compounds. Since long, it is extensively used in the qualitative analysis. It 
is also used in production of heavy water. 

There is no ISO standard on this subject. In the preparation of this Code of safety, considerable assistance has 
been derived from the following publications: 

a) Chemical Safety Data Sheet SD-36, Hydrogen Sulphide — Manufacturing Chemists Association, 
Washington. 

b) Dangerous Properties of Industrial Materials by Irving Sax Vlth Edition. 

c) National Institute for Occupational Safety and Health, US Department of Health, Education and Welfare: 
Criteria for a Recommended Standard on Occupational Exposure to Hydrogen Sulphide, HEW 
Publication No. (NIOSH) 77-158. 

d) Encyclopedia of Chemical Technology — Ulman, 6th Edition. 

The composition of the Committee responsible for formulation of this standard is given at Annex A. 



IS 15200: 2002 



Indian Standard 
HYDROGEN SULPHIDE — CODE OF SAFETY 



1 SCOPE 

This standard covers properties of hydrogen sulphide, 
the nature of hazards associated with it and essential 
information of personal protective equipment, storage, 
handling, labelling, transport, spillage/leakage, fire 
prevention and fire fighting, training and health 
monitoring and first aid. 

2 REFERENCES 

The following Indian Standards contain provisions 
which through reference in this text, constitute 
provisions of this standard. At the time of publication, 
the editions indicated were valid. All standards are 
subject to revision, and parties to agreements based 
on this standard are encouraged to investigate the 
possibility of applying the most recent editions of the 
standards indicated below: 



IS No. 


Title 


4155: 1966 


Glossary of terms relating to 




chemical and radiation hazards and 




hazardous chemicals 


4167: 1980 


Glossary of terms relating to air 




pollution {first revision) 



3 TERMINOLOGY 

For the purpose of this standard, the definitions given 
in IS 4155 and IS 4167 shall apply. 

4 PROPERTIES 

4.1 General Information 

4.1.1 Common Names 

Hydrogen sulphide, sulphureted hydrogen and 
hydrosulphuric acid. 

4.1.2 Chemical Name 
Hydrogen sulphide. 

4.1.3 Chemical Formula — H 2 S. 

4.1.4 Molecular Weight — 34.08. 

4.1.5 CAS No. — 7783-06-4. 
4A.6UNNo. — 1053. 

4.2 Physical Properties 

4.2.1 Description 

Colourless flammable gas with a strong offensive 
odour of rotten eggs. It is heavier than air and settles 
on the ground. 



4.2.2 Boiling Point 60.4°C. 

4.2.3 Melting Point — -85.53°C 

4.2.4 Specific Gravity — (18°C/4°C) — 1.54. 

4.2.5 Vapour Density (Air = 1 ) — 1 . 1 89. 

4.2.6 Density of Saturated Liquid — 114 kg/m 3 at 
21. IX. 

4.2.7 Density of Saturated Vapour — 3 1 .04 kg/m 3 at 
2U°C. 

4.2.8 Vapour Pressure — 20 arm at 25°C. 

4.2.9 Critical Temperature— 100.4°C. 

4.2.10 Critical Pressure — 88.9 atm. 

4.2.11 Critical Density— 349 kg/m 3 . 

4.2.12 Physical Status 

Gaseous at ordinary temperature but may exist as 
liquid at low temperature and high pressure. 

4.2.13 Solubility 

Slightly soluble in cold water, 0.32 percent maximum 
at 26.67°C (Wm), more soluble in alcohol. 

4.3 Chemical Properties 

4.3.1 Reactivity 

In aqueous solution it is weakly acidic in nature and 
reacts vigorously with nitrogen halides, metal oxides, 
sodium peroxide and oxidants. 

4.4 Explosion Hazard 

At elevated temperature, it decomposes to its elements 
and may cause bursting of container. Thermal 
decomposition is promoted by contact with metal like 
platinum. 

4.5 Fire Hazard 

4.5.1 Hydrogen sulphide is a flammable gas and burns 
in air with blue flame. It may cause fire and explosion 
when exposed to heat, flame or oxidizer. It emits highly 
toxic fumes of oxides of sulphur in case of fire. 
Hydrogen sulphide gas is heavier than air and may 
travel considerable distance to a source of ignition and 
flash back. 

4.5.2 Auto Ignition Temperature in Air — 260°C. 

4.5.3 Flammable Limits in Air (Percent by Volume) at 
2Q°C: 

a) Lower explosion limit (LEL) ; 4.3 



IS 15200 : 2002 



b) Upper explosive limit (UEL) : 46 

4.6 Corrosivity 

Hydrogen sulphide is a corrosive material. It attacks 
many metals, which results in the formation of 
sulphide. In presence of moisture and any oxidizing 
material, it may form sulphuric acid and corrode the 
containers. 

5 HEALTH HAZARD 

5.1 Hydrogen sulphide can affect the body if it is 
inhaled or if comes in contact with the eyes, skin, nose 
or throat. It can also affect the body if it is swallowed. 
Inhalation of high concentrations of hydrogen sulphide 
vapour may cause loss of consciousness and death. 
Inhalation of lower concentrations may cause 
headache, dizziness and upset stomach. Exposure to 
hydrogen sulphide can cause temporary loss of the 
sense of smell, and irritation of the eyes, nose or throat. 
The toxic effects of hydrogen sulphide can be 
categorized as acute effects, sub-acute effects and 
chronic effects. 

The acute toxic effects of hydrogen sulphide in human 
poisoning are summarized in Table 1. 

5.2 Toxicity 

5.2.1 Threshold Limit Value (TLV) — 10 ppm (15 
mg/m 3 ) (ACGIH). 

5.2.2 Short-Term Exposure Limit (STEL}~ 15 ppm 
for 15 min. 

5.2.3 Toxic Dose Level (TDL) — 0.004 7. 

5.2.4 Odour Threshold— 0.13 ppm (0.215 mg/m 3 ). 



5.2.5 LC 5Q (inhal-rat) — 444 ppm. 

5.2.6 Target Organs — Respiratory organs and eyes. 
6 PERSONAL PROTECTION 

6.1 Wear impervious clothing to prevent the skin 
contact from liquid hydrogen sulphide or from contact 
with vessels containing liquid hydrogen sulphide. 

6.2 Wear splash-proof safety goggles to prevent any 
possibility of eye contact where liquid hydrogen 
sulphide is handling. 

6.3 Employees should wash promptly when skin 
becomes wet. 

6.4 Remove clothing immediately that becomes wet 
with liquid hydrogen sulphide until the hydrogen 
sulphide is evaporated. 

6.5 Respiratory protection is essential to prevent 
inhalation of gas. Minimum respiratory protection 
required for concentration above 10 ppm are given in 
Table 2. 

6.6 Respirators may be used for operations which 
require entry into tanks or closed vessels and in 
emergency situation. The respirator used shall be 
approved by the concerned authority. 

6.7 Lead acetate paper should be carried along with 
portable hydrogen sulphide monitor for use where 
necessary. 

6.8 Amyl nitrite should be given to the victim for 
inhalation by crushing the ampule in front of nostrils 
of the victim. 



Table 1 Acute Toxic Effects of Hydrogen Sulphide in Human 

(Clause 5 A) 



SI 


Concentration, 




Duratioo of Eiposure 




Comments 


No. 


of H 2 S, ppm 














15 min 


>l5mm-lh 


>lh-4h 


>4-8h 




(1) 


(2) 


(3) 


(4) 


(5) 


(6) 


(1) 


i) 


10 








Eye irritation 


Maximum tolerable 
concentration for 
prolonged exposure 


i>) 


50-100 


Loss of olfactory 


Eye irritation 


Eye and bronchial 


Danger in case of 


Working condition 






perception 




irritation 


continuous exposure 


necessitate 
protective measures 


iii) 


1 50-250 


do 


Eye and bronchial 


Serious respiratory 


Serious respiratory 


do 






irritation 


distress and asthenia 


distress and asthenia 


iv) 


300-400 


Loss of olfactory 


Severe respiratory 


Pulmonary edema 


Pulmonary edema 


Risk of death if no 






perception eye and 


distress acute asthenia 


and risk of death 


and risk of death 


appropriate 






bronchial irritation 








measures taken 






asthenia 










v) 


500-1 000 


Loss of consciousness 


Risk of pulmonary 


- 


„ 


do 






respiratory distress 


edema and death 






vi) 


>1 000 


Immediate loss of consciousness and respiratory distress 







IS 15200 : 2002 



Tabic 2 Respiratory Protection for 
Hydrogen Sulphide 

(Clause 6.5) 



SI 

No. 



Condition 



Minimum Respiratory 

Protection Required 

Above 10 ppm 

(I) (2) 0) 

i) Low concentration Any supplied-air respirator with a 

(up to 300 ppm) full facepiece, helmet or hood 

u) >300 ppm and escap Self-contained breathing 

from unknow apparatus with a full facepiece 

concentration operated in pressure demand or 
other positive pressure mode 



7 STORAGE/HANDLING 

7.1 Storage 

7.1.1 Anhydrous hydrogen sulphide does not react 
with steel at ambient temperature. However, in aqueous 
medium, the hydrogen generated by reacting with iron 
can diffuse in the metal causing blistering and 
embrittlement. The degree of corrosion depends upon 
the quality of steel and is very limited with stainless 
steel. Ferritic steel is much more sensitive to hydrogen 
embrittlement than austenitic steel. Residual stress of 
high strength steel for storing hydrogen sulphide is to 
be relieved after welding otherwise it is likely to crack 
under stress. 

7.1.2 The use of copper and its alloys are to be 
prohibited. 

7.1.3 Storage area should be well ventilated, and if 
possible, equipped with a water cooling system in case 
of fire. 

7.1.4 Hydrogen sulphide should be stored separately 
from incompatible products (oxidizing agents, 
inflammable materials, etc). 

7.1.5 Area should be declared as 'NO SMOKING 
AREA'. 

7.2 Handling 

Personal protective wears are to be used invariably 
while harfdling hydrogen sulphide. 

7.3 Labelling 

All containers should bear an identifying label as per 
the provision of prevailing relevant regulations 
indicating that the contents are highly flammable and 
toxic. The label should also list the special risks and 
include cautionary advices. 

7.4 Transportation 

7.4.1 Hydrogen sulphide is flammable and toxic. Its 
UN No. is 1053, UN hazard Class 2, 3 and 6.1, 



7.4.2 The Rules and Regulations for transportation of 
hazardous chemicals shall be adhered to. 

8 SPILLAGE/LEAKAGE AND DISPOSAL 

If hydrogen sulphide is spilled or leaked, the following 
steps should be taken: 

a) Remove all ignition source; 

b) Ventilate area of spill or leak to disperse gas; 

c) If in the gaseous form, stop flow of gas. If 
source of leak is a cylinder and the leak 
cannot be stopped in place, remove the 
leaking cylinder to a safe place in the open 
air, and repair the leak or allow the cylinders 
to empty; and 

d) If in the liquid form, allow to vaporize. 

9 FIRE PROTECTION AND FIRE FIGHTING 

9.1 Stop flow of hydrogen sulphide gas. 

9.2 Carbon dioxide and alcohol foam type of 
extinguisher should be used for fire fighting. 

9.3 Fire fighting personnel should have the required 
self-contained breathing apparatus with a full facepiece 
operated in pressure demand or other positive pressure 
mode. 

10 TRAINING AND HEALTH MONITORING 

10.1 Training 

10.1.1 Safety in handling depends to a great extent 
upon the effectiveness of employees education and 
training. 

10.1*2 Employees should be familiar with its 
flammable and toxic properties. 

10.1.3 Continuous training and re-training should be 
done in the safe handling procedures. 

10.2 Health Monitoring 

10.2.1 During pre-employment medical check up, 
examination of the eyes and lungs should be stressed. 
The following procedures should be made available 
to each employee who is exposed to hydrogen sulphide 
at potentially hazard levels: 

a) A complete history and physical examination 
— The purpose is to detect pre-existing 
conditions that might place the exposed 
employee at increased risk and to establish a 
baseline for future health monitoring. 

b) Eye disease — Hydrogen sulphide is a severe 
eye irritant and may cause tissue damage. 
Those with pre-existing eye problems may 
be at increased risk from exposure. 



IS 15200:2002 



c ) \ 4" -11" chest roentgenogram — Hydrogen 
sulphide may cause human lungs damage. 
Surveillance of the lungs is indicated. 

d) FVC and FEV {I Sec) — Hydrogen sulphide 
is a respiratory irritant. Persons with impaired 
pulmonary function may be at increased risk 
from exposure. Peridic surveillance is 
indicated. 

10.2.2 Periodical medical examination should be done 
on annual basis for all the above mentioned criteria, 
except that an X-ray is considered necessary only when 
indicated by the results of pulmonary function testing, 
or by signs and symptoms of respiratory diseases. 

II FIRST AID 

11.1 Eye Contact 

11.1.1 If liquid hydrogen sulphide gets into the eyes 
immediately wash the eyes with large quantity of water 
for at least 15 min, occasionally lifting the lower and 
upper lids. 

1 1.1.2 Get medical attention immediately. 



1 1.1.3 Contact lenses should not be used when working 
with this chemical. 

11.2 Skin Contact 

11.2.1 If liquid hydrogen sulphide gets on the skin, 
immediately flush the contaminated skin with water. 

11.2.2 If it soaks through the clothing, immediately 
remove the clothing and flush the skin with water. 

1 1 .2.3 If irritation persists after washing, get medical 
attention. 

11.3 Inhalation 

1 1.3.1 If a person breathes in large amount of hydrogen 
sulphide move the exposed person to fresh air 
immediately and administer oxygen if available, 

1L3.2 If breathing has stopped, give artificial 
respiration. 

11.3.3 Keep the affected person warm but not hot and 
at rest. 

11.3.4 Get medical attention as soon as possible. 



IS 15200 : 2002 



ANNEX A 
(Foreword) 

COMMITTEE COMPOSITION 

Industrial Safety and Chemical Hazards Secitonal Committee, CHD 8 



Organization 
National Safety Council, Mumbai 
Airports Authority oflndia, New Delhi 
Atomic Energy Regulatory Board, Mumbai 
Bhabha Atomic Research Centre, Mumbai 
Central Boiler Board, New Delhi 
Century Rayon, Thane 

Central Leather Research Institute, Chennai 

Central Mining Research Institute, Dhanbad 

Central Warehousing Corporation, New Delhi 

Confederation of Indian Industries, New Delhi 

Department of Explosives, Nagpur 

Department of Industrial Policy & Promotion, New Delhi 

Development Commissioner (SSI), New Delhi 

Directorate General of Health Services, New Delhi 

Directorate General Factory Advice Services and Labour Institutes, Mumbai 

Directorate of Industrial Safety and Health (Factory Inspectorate), Mumbai 
Directorate General of Mines Safety, Dhanbad 

Employees State Insurance Corporation, New Delhi 
Excel Industries Limited, Mumbai 
Hindustan Aeronautics Limited, Bangalore 
Hindustan Lever Limited, Mumbai 

Indian Institute of Chemical Technology, Hyderabad 
Indian Chemical Manufacturers Association, Mumbai 

Indian Drugs and Pharmaceuticals Limited, Rtshikesh 
Indian Petrochemical Corporation Limited, Vadodara 

Indian Space Research Organization, Sriharikota 

Industrial Toxicology Research Centre, Lucknow 

Ministry of Defence (DGQA), New Delhi 

Ministry of Defence, Directorate of Standardization, New Delhi 

Ministry of Defence (OFB), Kolkata 



Representative^) 
Shri K. C. Gupta (Chairman) 

REPRESENTATIVE 

Shri P. K. Ghosh 

DrB.N.Rathi 

Reisesentatfve 

Shri H. G. U^amchandani 

Shri S. 5C Mishra {Alternate) 

Representative 

ShriJ.K.Panbey 

Representative 

Representative 

Representative 

DrD.RXhawla 

Representative 

Representative 

Dr A. K. Majumdar 

Shri S. P. Rana (Alternate) 

Representative 

Director of Mines Safety (MSE) 

Deputy Director of Mines Safety (HQ) (Alternate) 

Representative 

ShwVipwB.Doshi 

Representattve 

Shri B.B.Dave 

Shri Aktya Jhavar (Alternate) 

Shri S. Venkateswara Rao 

Shri V.N. Das 

Shri A. A. Panjwani (Alternate) 

Representattve 

Shri P. Vuayraghavan 

Shri M. R. Patel (Alternate I) 

Shri A. V. Sarathy (Alternate II) 
Shri P. N. Sankaran 

Shri V. K. Srtvastava (Alternate) 

DrVwendraMisra 

Dr V. P. Sharma (Alternate) 
Shri M. S. Sultania 

Shri Sujtt Ghosh (Alternate) 
ShriP.S.Ahuja 

Lt-Col Tejinder Singh (Alternate) 
DrD. S.S.Ganguly 

Shri R. Srintvasan (Alternate) 



(Continued on page 6) 



IS 15200: 2002 



(Continued from page 5) 

Organization 

Ministry of Defence (R&D), Kanpur 

Ministry of Environment & Forest, New Delhi 
National Institute of Occupational Health, Ahmcdabad 
National Organic Chemical Industries Limited, Thane 

National Safety Council, Mumbai 

Oil I ndustry Safety Directorate, New Delhi 

Safety Appliances Manufacturers* Association, Mumbai 

Standing Fire Advisory Council, New Delhi 

Steel Authority of India Limited, Ranchi 

SIEL Chemical Complex, New Delhi 

Southern Petrochemical Industries Corporation Limited, Tuticorin 

Tata AIG Risk Management Services Limited, Mumbai 
BIS Directorate General 



Representative(s) 

Dr A. K. Saxena 

Dr Rajindra Singh {Alternate) 

Representative 

Representative 

DrB.V.Bapat 

Shri V. R. Narla (Alternate) 

Shri P.M. Rao 

Shri D. Bfwas (Alternate) 

Shri S. K. Chakrabarti 

Shri V. K. Srtvastava (Alternate) 

Representative 
Representative 
Representattve 
Representative 
ShriV.Javaraman 

Shri S. Muruganandam (Alternate) 

Shri UrmishD. Shah 

Shri S. K. Chaudhuri, Director & Head (CHD) 
[Representing Director General (Ex-officio)] 



Member Secretary 

Shri N.K. Pal 
Director (CHD), BIS 



Bureau of Indian Standards 

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote 
harmonious development of the activities of standardization, marking and quality certification of goods 
and attending to connected matters in the country. 

Copyright 

BIS has the copyright of all its publications. No part of these publications may be reproduced in any form 
without the prior permission in writing of BIS. This does not preclude the free use, in the course of 
implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. 
Enquiries relating to copyright be addressed to the Director (Publications), BIS. 

Review of Indian Standards 

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed 
periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are 
needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards 
should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of 
'BIS Catalogue' and 'Standards: Monthly Additions'. 

This Indian Standard has been developed from Doc : No. CHD 8 (896). 



Amendments Issued Since Publication 



Amend No. 



Date of Issue 



Text Affected 



BUREAU OF INDIAN STANDARDS 



Headquarters : 



Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 1 10 002 
Telephones : 323 01 31, 323 33 75, 323 94 02 

Regional Offices : 

Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg 
NEW DELHI 110 002 

1/14 C.I.T. Scheme VII M, V. I. P. Road, Kankurgachi 
KOLKATA700 054 

SCO 335-336, Sector 34-A, CHANDIGARH 160 022 

C.I.T. Campus, IV Cross Road, CHENNAI 600 113 

Manakalaya, E9 MIDC, Marol, Andheri (East) 
MUMBAI 400 093 



Eastern 

Northern 

Southern 

Western 

Branches 



Telegrams : Manaksanstha 
(Common to ail offices) 

Telephone 

f 323 76 17 
\323 38 41 

1*337 84 99, 337 85 61 
1337 86 26,337 91 20 



{ 



60 38 43 
60 20 25 



J254 12 16,254 14 42 
\ 254 25 19,254 13 15 

("832 92 95,832 78 58 
1.832 78 91,832 78 92 



AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR, COIMBATORE. FARIDABAD. 
GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW. NAGPUR. 
NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM. VISAKHAPATNAM 



Reprography Unit, BIS, N©w Delhi, India